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J. BERGER, JII.

NEEDLE CLAMP.

APPLICATION FILED IuLvzo. I9I5.

1 309,272. I Patented July 8, 1,919.

I I II; III {If LIE THE COLUMBIA PLADOGIIAPH 60., WASHINGTON, D. c.

UNITED STATES PATENT oEEroE.

JOSEPH BERGER, JR., 0]? UTICA, NEW YORK, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

NEEDLE-CLAMP.

Specification of Letters Patent.

Patented July 8, 1919.

Application filed July 20, 1915. Serial No. 40,894.

To all whom it may concern:

Be it known that I, JOSEPH BERGER, J12, a citizen of the United States, residin at Utica, in the county of Oneida, State of ew York, have invented certain new and useful Improvements in Needle-Clamps, of which the following is a description, reference be ing had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvementsin needle clamps and more particularly to a clamp adapted to support a plurality of needles.

An object of the invention is to provide aneedle clamp, whereby a plurality of needles may be supported in pairs, one pair in ad vance of the other.

A further object of the invention is to pro vide a needle clamp having means for clamping the needles and also for positioning the needles, so that said needles may be arranged in pairs, one pair in advance of the other and one needle in each pair may be set at a different height from the other.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

In the drawings which show by way of illustration one embodiment of the invention- Figure 1 is a side view showing a needle clamp embodying my improvements;

Fig. 2 is a rear view of the same;

Fig. 3 is a view partly in vertical section, through the sockets for the front pair of needles;

Fig. 4 is a view from the opposite side of the needle bar from that shown in Fig. 1;

Fig. 5 is a sectional view on the line 55 of Fig. 4;

Fig. 6 is a sectional view on the line 66 of Fig. 4;

Fig. 7 is a sectional view on the line 7--7 of Fig. 6;

Fig. 8 is a detail showing in side elevation the cut away portion leading to the socket for one of the rear needles;

Fig. 9 is a view showing more or less dia grammatically a seam capable of being made by needles as supported by my needle clamp;

Fig. 10 is a detail showing in rear view a modified form of needle clamp; and

Fig. 11 is a similar view, showing a plan view of the same.

In carrying out the invention, I have provided a needle bar with a clamp at its lower end for a plurality of needles, which is so constructed that the needles may be supported in pairs, with one pair a considerable distance in rear of the other, so that a looper may cooperate with each pair of needles and also a thread laying device may operate in front of the rear pair of needles and in rear of the front pair of needles, and another thread laying device may operate in front of the front pair of needles.

Referring more in detail to the drawings, the invention consists in a needle clamp which is attached to a needle bar 2 and supports the needles 3, 4:, 5 and 6. The needles 3 and 1: form the front pair of needles, while the needles 5 and 6 form the rear pair of needles. The needle I is set with its point slightly above the point of the needle 3, so that a single looper may cooperate with both needles, as is well understood in this art and to also permit the upper cross thread to pass thereunder. Likewise, the needle 6 is set with its point above the point of the needle 5.

At the lower end of the needle bar 2, there is a supporting collar 7. This collar is secured to the end of the presser bar by a screw 8. The needle bar is provided with a socket for the shank 9 of the needle 4. The depth of this socket determines the position of this needle. The needle is held in place by a set screw 10 which passes through the collar 7 and engages the shank of the needle. The needle bar and the collar 7 are conjointly provided with a socket 11 for the shank 12 of the needle 3 and the depth of this socket determines the position of said needle. A. set screw 13 passing through the collar clamps the shank of the needle and holds the same on the needle bar. The collar 7 is formed with a rearward extension 14:. This extension has a socket 15 therein for the ward extension 20. This rearward extension is formed with a comparatively narrow neck 21 and lateral projections 22. One of these projections 22 extends over the needle 6 and limits the upward movement of the same in its supporting socket or positions the needle point when the needle is being set. The upper end of the socket 15 for the needle 5 is determined by this rearward extension 20 of the collar 19, the upper end of the needle 5 abutting against the underface of the projection. The collar 19 is secured to the needle bar by a set screw 19.

The sockets 15 and 17 are cut through to the outer face of the extension 14 to facilitate the forming of the sockets. The screws 16 and 18 are of considerably larger diameter than the shank of the needles, so that there is suflicient threaded connection between the screws and the side walls of the cut away portion leading to the socket to hold the needles in place.

The collar 7 at its front end is formed with suitable openings 2323 for the threads which lead to the front pair of needles. The collar 7 is also provided with openings 2424 which extend down through the collar for the threads for the rear needles. The neck 21 of the rearward extension 20 gives space for the threads to enter the openings 2%24.

In Fig. 9 of the drawings, I have shown more or less diagrammatically two sections of fabric, indicated at F, which are joined by a stitching mechanism having the needles set a above described. The needles 3 and 4 are disposed relative to the needles 5 and 6, so that a line passing through'the needle 4 parallel with the meeting edges of the fabric, as indicated in this figure, will pass between the needles 5 and 6, and, likewise, a line passing through the needle 5 and parallel with the meeting edges of the fabric will pass between the needles 3 and 1. A thread is laid about each pair of needles and these threads cross the meeting edges of the fabric, one thread overlapping the other in part.

In Figs. 10 and 11, I have shown a slightly modified form of needle clamp or arrangement of needles. The lower end of the needle bar 2 is a supporting collar 7 and this supporting collar is fixed to the end of the needle bar. The needle bar and sup porting collar are provided with needle sockets 3 and P for the front pair of needles. Said supporting collar has a rearward extension which is also provided with needle sockets for the needles 5 and 6*. The threads for the needles 5 and 6* pass respectively down through the openings 24,

while the threads for the needles 3 and 4? pass respectively down through the openings 23*. A second collar v19 is secured to the needle bar 2 and operates in the same manner as described in connection with Figs. 1 to 8.

From the needle clamp shown in Figs. 10 and 11, it will be seen that the front pair of needles are spaced a greater distance than the rear pair of needles and the rear pair of needle are each arranged in a line parallel with the line of'seam and passing between the front pair of needles. The cross threads connecting the rear pair of needles would therefore lie wholly upon the cross thread connecting the'front pair of needles. The pairs of needles in both the forms of invention described are spaced a sufficient distance apart to permit a thread laying device to operate between the pairs of needles as well as in front of the front pair of needles. Also, a single looper may parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination of a needle bar, an extensioncarried at the lower end of the needle bar, said needle bar and extension having sockets formed therein to receive respectively the shanks of a pair of needles, means for securing the needles in said sockets, said extension having sockets to'receive respectively the shanks of a second pair of needles, and means for securing said lastnamed needles in said sockets, said second pair of needles being disposed in a plane at one side of a plane containing said first mentioned pair of needles.

2. The combination of a needle bar, and means for securing a plurality of needles thereto, said means including a collar secured to the lower end of the needle bar, said collar having a rearward extension, 115 said collar having means for supporting a pair of needles lying in a plane containing the axis of the needle bar, and said rearward extension having means for support ing a pair of needles lying in a plane in 120 rear of the first named plane V 3. The combination of a needle bar, and means for securing a plurality of needles thereto, said means including a collar secured to the lower end of the needle bar, 125 said needle bar having two sockets adapted to receive respectively the shanks of a pair of needles, means for securing the needles in said sockets, said collar having a rearward extension provided with sockets to re- 130 ceive respectively the shanks of a second pair of needles, and means for securing said last named needles in said sockets.

4. The combination of a needle bar, and means for securing a plurality of needles thereto, said means including a collar secured to the lower end of the needle bar, said needle bar having a socket terminating at the upper end of the collar, and a second socket extending above said collar, said sockets being adapted to receive respectively the shanks oi the needles, a clamping screw carried by said collar for each needle, said collar having a rearward extension with sockets extending therethrough adapted to receive respectively the shanks of a pair of needles, and clamping screws carried by the collar for said last named pair of needles.

5. The combination of a needle bar, and means for securing a plurality of needles thereto, said means including a collar secured to the lower end of the needle bar, said needle bar having a socket terminating at the upper end of the collar, and a second socket extending above said collar, said sockets being adapted to receive respectively the shanks of the needles, a clamping screw carried by said collar for each needle, said collar having a rearward extension with sockets extending therethrough adapted to receive respectively the shanks of a pair of needles, clamping screws carried by the collar for said last named pair of needles, and a second collar carried by the needle bar against which the upper ends of the rear pair of needles abut for positioning the same.

6. The combination of a needle bar, means for'securing a plurality of needles thereto, said means including devices for supporting two pairs of needles, one pair of needles being arranged in rear of the other pair of needles and staggered relative thereto, and adjustable means for determining the vertical position of one of said pairs of needles.

7. The combination of a needle bar, a collar secured to the lower end of said needle bar and having a rearward extension, said collar and needle bar having means for supporting a pair of needles, said rearward extension having means for supporting a second pair of needles lying in rear of the first-named pair of needles, and an adjustable collar carried by the needle bar for engaging the upper ends of the shanks of the rear pair of needles for determining the vertical position thereof.

In testimony whereof I aflix my signature, in the presence of two witnesses.

JOSEPH BERGER, JR.

WVitnesses:

L. D. Mo'CoRMAo, EARL O. CLARK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

